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How to say "Be" in Japanese

Both words can translate to "be", but which should you choose?

Japanese Option A

間に合う

まにあう (maniau)
N4 / CEFR Syllabus
VS
Japanese Option B

役に立つ

やくにたつ (yaku ni tatsu)
N4 / CEFR Syllabus

Nuance Contrast & Translation Difference

When translating "be" into Japanese, you must choose carefully between 間に合う and 役に立つ. In Japanese, 間に合う (まにあう (maniau)) is typically associated with "to be on time, to make it in time" (Syllabus Level: N4) and represents Intransitive verb. Used to express arriving at a place or completing something by a specific time. Often used with the particle 'に'.. On the other hand, 役に立つ (やくにたつ (yaku ni tatsu)) maps to "to be useful, to be helpful" (Syllabus Level: N4) and represents A set phrase meaning to be useful or helpful for someone or something. It describes the utility of an object, skill, or person. Often followed by the particle に. A literal translation of "be" can often sound unnatural to native Japanese speakers if mixed up!
Bilingual Context for "間に合う"
電車に間に合うように急ぎました。
I hurried to make it on time for the train.
Bilingual Context for "役に立つ"
この辞書は日本語の勉強に役に立ちます。
This dictionary is useful for studying Japanese.

Nuance Mastery Quiz

Which Japanese word perfectly fits this blank space?

Fill in the blank: "電車に ___ ように急ぎました。" (Meaning: "I hurried to make it on time for the train.")
🎉 Correct Answer!

Remember: "間に合う" fits here because it means "to be on time, to make it in time" in the context of: "I hurried to make it on time for the train.". "役に立つ" represents "to be useful, to be helpful".

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